1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 8257594 27 * @summary Test that failing checkcast does not trigger repeated recompilation until cutoff is hit. 28 * @requires vm.compiler2.enabled 29 * @modules java.base/jdk.internal.misc 30 * @library /test/lib 31 * @build sun.hotspot.WhiteBox 32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 34 * -Xbatch -XX:CompileCommand=dontinline,compiler.uncommontrap.TestNullAssertAtCheckCast::test* 35 * -XX:CompileCommand=inline,compiler.uncommontrap.TestNullAssertAtCheckCast::cast 36 * -XX:CompileCommand=inline,compiler.uncommontrap.TestNullAssertAtCheckCast::store 37 * compiler.uncommontrap.TestNullAssertAtCheckCast 38 */ 39 40 package compiler.uncommontrap; 41 42 import sun.hotspot.WhiteBox; 43 44 import java.lang.reflect.Method; 45 46 public class TestNullAssertAtCheckCast { 47 private static final WhiteBox WB = WhiteBox.getWhiteBox(); 48 private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4; 49 cast(Object val)50 static Long cast(Object val) { 51 return (Long)val; 52 } 53 test1()54 static void test1() { 55 try { 56 // Always fails 57 cast(new Integer(42)); 58 } catch (ClassCastException cce) { 59 // Ignored 60 } 61 } 62 test2(Integer val)63 static void test2(Integer val) { 64 try { 65 // Always fails 66 cast(val); 67 } catch (ClassCastException cce) { 68 // Ignored 69 } 70 } 71 store(Object[] array, Object val)72 static void store(Object[] array, Object val) { 73 array[0] = val; 74 } 75 test3()76 static void test3() { 77 try { 78 // Always fails 79 store(new Long[1], new Integer(42)); 80 } catch (ArrayStoreException cce) { 81 // Ignored 82 } 83 } 84 test4(Integer val)85 static void test4(Integer val) { 86 try { 87 // Always fails 88 store(new Long[1], val); 89 } catch (ArrayStoreException cce) { 90 // Ignored 91 } 92 } 93 main(String[] args)94 public static void main(String[] args) throws Exception { 95 for (int i = 0; i < 1_000_000; ++i) { 96 test1(); 97 test2((i % 2 == 0) ? null : 42); 98 test3(); 99 test4((i % 2 == 0) ? null : 42); 100 } 101 Method method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test1"); 102 if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) { 103 throw new RuntimeException("TestNullAssertAtCheckCast::test1 not compilable"); 104 } 105 method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test2", Integer.class); 106 if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) { 107 throw new RuntimeException("TestNullAssertAtCheckCast::test2 not compilable"); 108 } 109 method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test3"); 110 if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) { 111 throw new RuntimeException("TestNullAssertAtCheckCast::test3 not compilable"); 112 } 113 method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test4", Integer.class); 114 if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) { 115 throw new RuntimeException("TestNullAssertAtCheckCast::test4 not compilable"); 116 } 117 } 118 } 119 120